package com.java.st.lib.tools.number;

import java.io.IOException;
import java.text.DecimalFormat;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

/**
 * 格式化两位小数
 * @author ASUS
 *
 */
public class DoubleSerialize extends JsonSerializer<Double> {
 
    private DecimalFormat df = new DecimalFormat("##.00");
 
    @Override
    public void serialize(Double value, JsonGenerator gen, SerializerProvider serializers)
            throws IOException, JsonProcessingException {
        if(value != null) {
            gen.writeString(df.format(value));
        }
    }
}
